We drove along the beach at fraser Island and my wife hit a few washouts on the beach. Not as much water as i have been through in the past but the 4.6 RR stopped running. After a few minutes it fired up again. Blew a lot of Black smoke unburnt fuel but then ran fine. I washed it down as we do after driving along the beach and it still ran fine. Yes, when it was cool i washed the sand from the engine :naughty: . Now five days later after returning home i gave it its proper wash down as i have done many times before. Now it wont start and there is no spark. Plugs are dry. Any ideas anyone ? :crybaby2: